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Finding the Fourth Proportional to 2,756.65, 4,127.91 and 1,522.69

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Solution

The fourth proportional to 2,756.65, 4,127.91 and 1,522.69 is: 2,280.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,756.65 : 4,127.91 = 1,522.69 : x
  2. Step 2: Convert to fraction form
    2,756.65/4,127.91 = 1,522.69/x
  3. Step 3: Cross multiply
    2,756.65x = 4,127.91 × 1,522.69
  4. Step 4: Simplify right side
    2,756.65x = 6,285,527.28
  5. Step 5: Solve for x
    x = 6,285,527.28/2,756.65
  6. Step 6: Final answer
    x = 2,280.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.